Specifications:
●GB4895-91 industry standard
(1)Appearance: white powdery crystal
(2) Moisture: 10%(W/V) petroleum ether solution should be clear & transparent
(3)Involatile matter: not more than 0.05%
(4)Insoluble matter in ethanol: not more than 0.01%
(5)Melting point: not less than 168℃( initial melting)
(6)Assay: not less than 96%
(7) Coloration of sulphuric acid: not darker than 1/600
●DAB-6 standard
 

●DAB-8 standard
 

●DAB-10 standard
(1)Appearance: white powdery crystal
(2)Identification: in accordance with experiment
(3)Melting point: 174-180℃
(4)Solubility: clear when 2.5g in 10ml ethanol and diluted to 25ml
(5)PH: in accordance with experiment
(6)Relative matter: in accordance with experiment
(7)Halogen: 100PPM or less
(8) Moisture: clear when 1g in 10ml light gasoline
(9)Residue on evaporation: is not more than 0.05%
(10)Assay: 96% & above
●JP-8 standard
(1)Assay: 96.0% & above
(2)Appearance: colorless or white crystalline powder
(3)Identification: in accordance with experiment
(4) Optical rotation: [α]D20-1.5°-+1.5°
(5)Melting point: 175-180℃
●BP80 standard
(1)Appearance: colorless transparent crystal
(2)Solubility: 1 portion in 700 portions of water or 1 portion 96% ethanol or 0.25 portion Chloroform
(3)Identification: in accordance with experiment
(4)Melting point: 174-181℃
(5) Specific Optical rotation: -1.5°-+1.5°
(6) Moisture:clear when 1g in 10ml 40-60℃ of petroleum ether solution
(7)Involatile matter: not more than 0.1%
●USP20, USP22 standard:
(1)Melting point: 174-179℃( initial melting)
(2) Specific Optical rotation: no rotation of racemization
(3) Moisture: clear in 1:10 normal hexane
(4)Involatile matter: is not more than 0.05%
(5) Halide : <0.035%
(6)Appearance: white powdery crystal
(7)Assay: 96% & above
Packing: 25kg paper box